Telescoping core for forming plastic poles or posts.



F. H. TIDNAM & J. N. GRAVES.

' TELESGOPING GORE FOR FORMING PLASTIC POLES 0R POSTS.

APPLICATION III-ED JAN. 26, 1910.

Patented Oct. 18, 1910.

wi cmaomzo Pfi/zrzWGravaS- @W j in orrion.

TELESOOPING GORE FOR FORMING PLASTIC POLES OR POSTS.

Specification of Letters Patent. I

Patented Oct. 18, 1910.

Application filed January 25, 1910. Serial No. 540,047.

To all whom it may concern:

Be it known that we, FREDERICK H. TID- NAiu and JOHN N. GRAVES, citizensof the Un ted States, residing at Oklahoma City, 1n the county ofOklahomav and State. of

. Oklahoma, have invented certain new and useful Improvements inTelescoping Cores for Forming Plastic Poles or Posts, of

, which the following is a specification, reference being had therein tothe accompanying drawing.

This invention relates-to mold cores, and

the principal object of the same is to provide a'core that is especiallyadapted for use in connection with post molds, said core be in of hollowtapering formation and provi ed with a handle-extension that-facilitatesthe necessary manipulations of the same which are incidental to placingthe same in, or removing it from, a mold.

In carrying out the objects of the invention generally stated above itwill be understood, of course, that the ,essential features thereof arenecessarily susceptible of changes indetails and structuralarrangements, certain practical embodiments of Which are shown in theaccompanying drawings, wherein v Figure 1 is a view in side elevation ofone embodiment of the. core, the core being formed of two. or moretelescopically ,ar-

ranged SQCl3lOI 1S, 3/Ild being shown expanded. Flg. 2 1s a similarview, the section being [shown telescoped. Fig. 3 isa fragmentary tionshowing a handle thereon.

vertical sectional view. Fig. 4 is a frag-- mentary detail view of oneend of one see. Fig. 5 is a detail view of the handle. Fig. 6 is asideView of a core made in a singlelength.

The present invention includes, 'in its broad aspect, the coreillustrated in the copendingapplication of F. H. Tidnam, Se-

rial Number 516,170 filed September 1, 1909. Referring to said drawingby numerals, and particularly to Figs. 1, 2, 3, 4: and 5 thereof, itwill be observed that the improved core comprises an elongated hollowtapering body thatis formed .of two or more sections 12, said sectionshaving a telescoping en-' ga ement. Section 1 is the outer section anhas its rear end substantially coneshaped as'indicatedat 3 andreceivestherein the divcrgently arranged fastening arms 4 means of the nuts andbolts. 21-22.

I scopic sections, the rear en ing bolts 7 that also pass through saidconeshaped'end 3 and through external reinforcing strips 8 carried bysaid end, and are detachably locked in fastening positions by the nuts9. The inner section 2 is similarly pro vided with a cone-shaped rearend 10 to which the arms 11* of handle 12 are fastened by means of bolts13 and nuts 14, said end bein also equipped with reinforcing strips 15through which bolts 13 pass. Cables 16'-17 are provided fortelescoping'the mold sections, cable 16 having one end connected to thehandle of section 1, and cable 17 having one end connected to the handleof section 2, said cable 17 extending through the rear end of section 1.

In use, the core is placed within a mold in an expanded-condition, andafter it has performed itsfunctions, section-2 is drawn into section 1by means of its cable 17, after which both sections may be readilywithdrawn from the mold by means of both cables.

I In Fig. 5 the core is in a single length and of an elongated hollowtapering formation,-

as indicated at 18. The rear end of the body having the parallel arms 19of the handle 20 detachably secured to its inner surface by The handleand arms are integral and preferably formed of strap metal. A cable maybe used for withdrawing the core from the mold if desired, said cablebeing obviously used as is shown in connection with the outer section 1,

Fig. 3. u It will be seen that in both forms of the invention the coremay be readily manipulated to position it withina mold or to remove ittherefrom, the handle being of such a nature that it serves equally aswell as a l andgrip asanattaching medium for a cable.

What we claim as our invention is 1. A mold comprising a (plurality oftelesections being tapered, a handle secured to the rear end of eachofsaid section?- and a cable connected to each of said han removing saidmold from a ost. 2; A mold comprising a p urality of teleof each ofsaidles for scoplc sectlons, the rear end of each of sand I Intestunony-whereofwe hereunto afhx sections being tapered, substantiallyV- our signni-mres in pi'eseneeoi two wilnesses.

shaped handles, means for detachably secur- FREDERICK HI TTDNAR ing oneof said handles Within each of-suid JOHN N. GRAVES.

tapered portions, and a cable secured to each i Witnesses: of saidhandles for drawing one of said sec- F. W. CASE,

l tions Within the other. TAT/PER BOZARTH.

